/* Copyright (c) 2010 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.orkut.client.api.samples.greetings.server.db;

import com.google.gdata.util.common.base.Pair;
import com.google.inject.Inject;
import com.google.orkut.client.api.samples.greetings.shared.AuthorizationException;

import javax.jdo.PersistenceManager;
import javax.jdo.PersistenceManagerFactory;

import java.util.Date;

/**
 * Data access operations to user credentials.
 *
 * @author Shishir Birmiwal
 */
public class GreetingsDb {
  private final PersistenceManagerFactory pmf;

  @Inject
  public GreetingsDb(PersistenceManagerFactory pmf) {
    this.pmf = pmf;
  }

  public void storeCredentials(String sessionToken, String accessToken, String accessTokenSecret) {
    PersistenceManager persistenceManager = pmf.getPersistenceManager();
    AuthEntry authEntry = new AuthEntry(sessionToken, accessToken, accessTokenSecret, new Date());
    persistenceManager.makePersistent(authEntry);
    persistenceManager.close();
  }

  public Pair<String, String> getCredentials(String sessionToken) throws AuthorizationException {
    PersistenceManager persistenceManager = pmf.getPersistenceManager();
    AuthEntry entry = null;
    try {
      entry = persistenceManager.getObjectById(AuthEntry.class, sessionToken);
    } catch (Exception e) {
      throw new AuthorizationException();
    }
    Pair<String, String> result =
        new Pair<String, String>(entry.getAuthToken(), entry.getAuthTokenSecret());
    persistenceManager.close();
    return result;
  }

  public void removeCredentials(String sessionToken) {
    PersistenceManager persistenceManager = pmf.getPersistenceManager();
    AuthEntry entry = persistenceManager.getObjectById(AuthEntry.class, sessionToken);
    persistenceManager.deletePersistent(entry);
    persistenceManager.close();
  }
}
